89840940965 has 4 divisors (see below), whose sum is σ = 107809129164. Its totient is φ = 71872752768.

The previous prime is 89840940919. The next prime is 89840941019. The reversal of 89840940965 is 56904904898.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 66031525156 + 23809415809 = 256966^2 + 154303^2 .

It is a cyclic number.

It is not a de Polignac number, because 89840940965 - 2¹⁶ = 89840875429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89840940898 and 89840940907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984094092 + ... + 8984094101.

It is an arithmetic number, because the mean of its divisors is an integer number (26952282291).

Almost surely, 2^89840940965 is an apocalyptic number.

It is an amenable number.

89840940965 is a deficient number, since it is larger than the sum of its proper divisors (17968188199).

89840940965 is a wasteful number, since it uses less digits than its factorization.

89840940965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17968188198.

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 89840940965 in words is "eighty-nine billion, eight hundred forty million, nine hundred forty thousand, nine hundred sixty-five".